Toán Lớp 8: Tìm x
12x (12x – 1) – (12× +5)(12x – 5)=12x + 25
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Toán Lớp 8: Tìm x
12x (12x – 1) – (12× +5)(12x – 5)=12x + 25
Comments ( 2 )
<=> -32x + 115x = 81 + 2
<=> 83x = 83
<=> x = 1
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